目的 研究黄芩素对卵巢癌HO-8910细胞凋亡的调控作用及其可能的作用机制。方法 选取人卵巢癌细胞系HO-8910细胞，经黄芩素不同浓度及不同时间处理后，分别采用噻唑蓝（MTT）法测定对细胞增殖的影响；采用流式细胞仪检测细胞凋亡和细胞周期；采用Western blotting法检测Bcl-2家族蛋白表达情况。结果 黄芩素对HO-8910细胞有明显的增殖抑制作用，呈浓度-时间依赖性。与对照组比较，黄芩素组细胞凋亡率明显升高（P<0.05、0.01）。黄芩素上调Bax/Bcl-2值，上调cleaved Caspase-3及cleaved Caspase-9的蛋白表达量，呈浓度依赖性。结论 黄芩素通过激活Caspase和Bcl-2家族蛋白对卵巢癌HO-8910细胞发挥抗增殖及诱导凋亡活性。

Objective To explore the apoptotic effect of baicalein, a coumarin flavonone, on human ovarian carcinoma HO-8910 cells, as well as the mechanisms. Methods HO-8910 cells were treated with esculetin at a series of concentrations for different times. Expression of apoptosis related Bax/Bcl-2, and Caspases proteins in esculetin treated HO-8910 cells were detected by Western blotting. Cell growth and apoptosis were measured by MTT test and flow cytometry invitro. Results Cell viability assay showed that esculetin had obvious anti-proliferation effects on HO-8910 cells in a dose-and time-dependent manner. Compared with control group, the group treated with esculetin showed a significant increase in apoptosis rate (P < 0.05, P< 0.01). The results demonstrated that esculetin up-regulated the Bax/Bcl-2 ratio and cleaved Caspase-3, cleaved Caspase-9 expression in a dose-dependent manner. Conclusion In summary, baicalein exerts anti-growth and induced-apoptosis activity against ovarian cancer HO-8910 cells through activating Caspase and Bcl-2 family proteins, therefore presenting as a promising therapeutic agent for the treatment of ovarian cancer.